Barbecue thermometer



FIG. 1 is a top front perspective view of a barbecue thermometer showing the claimed design;

FIG. 2 is a top rear perspective view of the barbecue thermometer showing the claimed design;

FIG. 3 is another top rear perspective view of the barbecue thermometer showing the claimed design;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a left view thereof;

FIG. 7 is a right view thereof;

FIG. 8 is a top view thereof; and,

FIG. 9 is a bottom view thereof. 

CLAIM The ornamental design for a barbecue thermometer, as shown and described. 